I could make it work
Landon Cunningham wrote:
I know you have all probably read my past post regarding my problems
with encoding using the pnoJpeg lib. I know you must think that the
problem is very similiar to pnoJpegLib: 0-bytes length VFS-file
2005-05-01 09:03:00 <Miguel Angel Sotomayor Hernandez. I have looked
at it and even tried encoding to a memhandle but the same problem
exists, the mem handle is exactly 4kb.
Hopping that it will be usefull, here is my code, I hope it works for
you. I'm just sending the relevant part of the code, sorry it's a little
bit messy (I have more code within the function that checks if the image
already exists and stores a reference to the image so my app knows what
report the image belongs to and that kind of stuff but I removed those
parts to make it clear... I hope).
If you are in trouble let me know.
I hope this helps
Miguel
code:
pnoJpeg2EncPtr jpegEncode;
MemHandle imgh;
BitmapType * bitmapS;
UInt16 * bitsS;
pnoJpeg2EncPtr jpegEncode;
MemHandle imgh;
bitmapS = BmpCreate (previewWidth*2, previewHeight*2, previewDepth, 0,
&err);
bitsS = (UInt16 *) BmpGetBits (bitmapS);
err = CameraLibPreview (gLibRefNum, bitsS,
kCameraImageFormatRGB16, previewWidth*2, previewHeight*2);
err = pnoJpeg2EncodeCreate(pnoJpegRefNum, &jpegEncode);
if(err == errNone){
pnoJpeg2EncodeToMemHandle(pnoJpegRefNum, jpegEncode,
&imgh);
pnoJpeg2EncodeSetQuality(pnoJpegRefNum, jpegEncode, 80);
pnoJpeg2EncodeProgressive(pnoJpegRefNum, jpegEncode,
true);
err = pnoJpeg2Write(pnoJpegRefNum, jpegEncode, bitmapS);
pnoJpeg2EncodeFree(pnoJpegRefNum, &jpegEncode);
}
Err error=0;
UInt16 volRefNum;
UInt32 volIterator;
UInt16 pathLength;
FileRef fr;
volIterator = vfsIteratorStart;
pathLength = 64;
error = VFSVolumeEnumerate(&volRefNum, &volIterator);
if (error == errNone)
VFSGetDefaultDirectory(volRefNum, ".jpg", path,
&pathLength);
else
DisplayError("No existen tarjetas para guardar
la imagen", error);
if (error == errNone){
if (pathLength > 0 && path[pathLength - 1] == '\0')
pathLength--;
if (pathLength > 0 && path[pathLength - 1] != '/')
path[pathLength++] = '/';
}
if(error == errNone) {
void * datos; // Un apuntador sin tipo de dato
específico
// Guardar la imagen en el archivo
StrCat(path, nombre);
datos = MemHandleLock(imgh);
error = VFSFileOpen(volRefNum, path,
vfsModeCreate | vfsModeReadWrite, &fr);
error = VFSFileWrite(fr, MemHandleSize(imgh),
datos, NULL);
VFSFileClose(fr);
MemHandleUnlock(imgh);
if(error)
FrmAlert(ImagenErrorAlert);
}
Landon Cunningham wrote:
I know you have all probably read my past post regarding my problems
with encoding using the pnoJpeg lib. I know you must think that the
problem is very similiar to pnoJpegLib: 0-bytes length VFS-file
2005-05-01 09:03:00 <Miguel Angel Sotomayor Hernandez. I have looked
at it and even tried encoding to a memhandle but the same problem
exists, the mem handle is exactly 4kb.
So again what I am doing is trying to encode a bitmap using the pno
jpeg library. I have tried encoding to a filestream which results in
4kb jpeg image which does not open. Then I have tried using a
memhandle which results in 4kb image. I check the memhandle size
through MemHandleSize() function which results in exactly 4kb or 4096
bytes.
I have tried looking at past examples and past posts but I seem to get
nowhere. I am just trying to encode a bitmap of the screen which is
160x160. Which as I read should not be a problem right.
I know this must seem very annoying that I try and keep posting the
same problem with the same result. Ie no one helping me. But I have
spent hours trying to search past posts and looking for any results
that relate to this. I do apologize.
Maybe this is some small stupid little problem that most people would
see but I have been looking at my code for way too long and I can't
seem to see it.
Thanks,
Landon C
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